Leach



W. W. LEACH.

FURNACE.

APPLHATIQN mn ma. :3, :915|` 1,308,987.Y lnl'lntwl July 5, ISHS).

3 SHtETS SNEU 2` @une fot Gramm,

W. W LEACH FURNACE.

AFPUCAUON msn mi. 13. |919.

1,308,987, lntvmwl July t", 1919.

3 SMETS YSMZET 3.

ITED STATES OFFICE.

WILLIAM W. LEACH, 0F MANSFIELl), OHIO, ASSIGNOR 0F 0NE-HALF T0 WILLIAM H.

. DIXN, 0F MAIS'SFIELD, OHIO,

FURNAC'E.

Sneciicatifon of Letters Patent.

Patented July 8, 1919.

Application tiled February 13, 1919. Serial 110,273,785.

Tu 1M :Nun/L it 'amy concern.:

lle it known that l. VXLLIAM W. Lmnn, a citizen nl' the United States of America., residing al; Manalield, in the county uf Richland and State of Ohio, have invented certain new and useful Improvements in Furnaces, of which the following in a Speer [icat ian.

ThiaV Aaccntion reiatea tu sheet inetal heating turuaee` and eapeeially adapted for uae in burning;r pmrdereil cual.

mhe use in heet metal rolling! milley ai the, cuiivcntienal type ot' furnace for heating! sheet metal has many disadvantage-a, whirh arc efapecially aggravated when pm".'tle`i'ef.l fuel ia hurried in upcratiug ,mmc fm' heat ing purpnsesl. The ;.\re;-;ent im'entiwii aiuin tf overcmne and elininnite t1 a large extent' the difiadiantagca referred tu which are Well lmmrii tn thune #killed in the art at {iperatiijigf sheet metal lurIiat'eS.

rThe ohieets.l therefore1 of the prenent invention are tu constrnet and huild a urnaee fm' heating sheet` metal that `will continuously and 'automaticallyY keep aud maintain the furnace and pile.a ut sheet, metal Clean and free, from the usual deliri and duet,4 which in incident to the use and uperatimi ni the elim ent inruil type of furnace tu main tain uniform. heat throughout the cha'mher of the turnace sulla tu heat the aheeta more unilurniljt' and event),` throughput the hull: and area of saine.; tn provide a ernst@ conn nei-ting; liuc whieh is in minniunica 'um with the atari: fur the purpose` mi' collet-ting' and lli-:wintr the dual and allier detain iut-i :aid fine freni the furnace at predeterinined point@` across the entire nare; to prm'ide ready.y l'ree and can' accese; tu the lire linx and interior nt the furnace fer the purpuae of repairingsaine and tu prm'ule means (if relnm'nig the Slag, .n

other debris from the tire box without dis-- turliing` reinm'ing` adjuating);` er upening the. lire linx clnaiire in: door; to provide means ot injecting! steam or air, inta the 'furnace to clean the will thereul from clust 01' other deliriv incident ur due to the cunihustinn of the l'uel; to prnvide a novel lire lim; that aida n'iaterially in conducting;V slag: tir-other incunihustilile residue et the pruducta of comhiiatimn tu a point easilr aeceeaihle tu thc eperatmr willie Vturnace thereh), permitting the reninral nt the da; and deliri# with ease` and cunrenieiu'e durinlg` the, uperatiun el' the width of the furfurnace and burning of the fuel; to provide laetitia at regulating the draft nl" the furnace and cleaninglr tluea` thereof.`

Theme and nther objects are` attained hy huilding and eunstrixcting a furnace as Shawn in the drawings in which:

Figuri- 1 .shows a mediate lmlgitudinal section ot' the, turn-aen.

lfigr, 2 shows a crues acct ion of the furnace taken on the line t-J of Fig. 1.

lfiiej. 2 a trip plan view al the furnace shfiu'iugf purtiuns 01* the tup lli-alien away to nuire rlearly :than itu` cnnatructiim.

ltig. l im a rear eleratlfm nl' the furnace Fig J.- a diagrammatic -aide View fit' the furnace ahmringf the pnaitimi ut the tlues with iclatinu tu the eliainher and lire linx nf thtl furnace and Stacie *`i sie -i fruiit View of Fig. 5 with a portieu thereof hralicn :way to zhmr a section un the line i-S at Fig.

in cnnatruetinf and building a furnaee to carry ont the uhjeetaV sought to he nhtained h3' the invention. Side walls and Z are provided and huilt t0 runnect with a trant wall il. lThe rear walls 4 and 5 of the 'furnaee rmwergre from the side walls t0 turni a Suhalantiall)v V ahaped structure learing an 0pt-ning hetween the ends which is closed h): a hinged dom' li secured to a plate QG. The dem' carries a conventional type of lilurner T for use in burning powdered coal tht` cual heilig reudufted into the lire huX S Irma anyY aauree at' supply through the` nicdiuni of air presaure ur the like, A runt' l) which i. farmed prelierahly uf alnpingf e011-,

tuur is provided and adapted tu rest upon and he siiipnrted by the sidra front and real' alla mi' the furnace thereby forming a rhaniher lt? into which the `aheet metal is placed and supported mi the corrugated hott tuin 1l preparatmy to heatingr Same for the purpose intended.

The furnace elianihcr and huttmn is preferahly divided hy a partition wall l2 which 'is `huilt iu thc center (if the chamher runningr fruni the front wall 25 rearwardly tu a pre determined point adjacent tu the rear walls at' the furnace and it interaech` at vaid point' with hridgc \\'al| lli and H. The partition and bridge walls` du nut extend tu the roof ut' th(` furnace au that hath sides of the chamber that are dixideil h3 the partition wall 1;! are aliray in cuuinuinitation with eaeh other. The ln-idge allay arcpreferably ion jmit a. forceddraft, to be provided with tapered projecting portions 15 und 1o which serve aus deflectorn. The bottom 1T ol the Gre box is connected with the bridge walliey and inclincs or slopes downAv wnrdlv und is connected or attached to the `front ends of the reni' wells `rl und 5 und the bridge walls. y

T he above described construction proj/idee es shown in Figs. l and 3 n fire box having :L downwardlv inclined or sloped bottom-` vinti! the rear ivalls of the furnaf-.e dverging toward the side Walls ol the furnace thereby forming a fire box that gradually enlarges toward the furnace chamber and which merges into the full width thereof as shown in Fig. 3. Preferably at a` point vvhere the rear walls 4 and 5 merge into the slde Walle l and 2 and adjacent. to the bottoni of the furnace, a flue 18 is provided running from one side. of the furnace to the other and it is in communication with fines i9 and 20 which in turn communicate with a stack 21.

Blues 22 and 23 are provided in the eide walls 1 and 2 0f the furnace and preferubljvy inolhed downwnrdly towurd the front und bottoni 11 of the furnace. The openingv :il prmjide communication between the finer: an fire box 8. The lines 22 and 23 aim communicate with luee 2l which are open to the air to induce a naturel draftlor perapplied thereto. The fines 25 formed in the front Walls of the furnace as Shown in Fig. B also con'unnni cate with the flues 22, 23 and 25 es shown in he ends of the rear Walle 4 and 5 of the furnace have the apertured plete 26 ab tached thereto which is provided with open ing 2 and 28 which aline with the open ende of the lines 25 thereby admitting atmos pherie nir into fill the connecting Hnos and also providing mennel of applying steam or nir pipe connections to create n forced draft if desired through the finer` 'for pnrpofar which will be described particularly hereinafter.

I order to regulate the forced or natural drarflliof the lines, adjustable dempers 29 are'provided to close or open lines llleand 20 more or less. To the plate 26 the door G is hinged in a conventional manner and it carries the conventional type of burner 7 for burning powdered coal or the like. This1 door und plate provide a closure for a part of the opening formed between the rear wells 4 and 5 of the furnace and also pron vides means whereby ready and convenient access een be hed to the fire box b v simply swinring the door on its hinges. The inelinen bottom 17 of the fire box is eonstrucfed so that its end will be positioned below the bott YIn of the door 6 leaving an aurilinryv opening;r 32 Whioh is normally closed b v n hinged door Mits shown in Figs. l und l. This arrangement provides a means of removing the lug or other debrie that accumulates in the fire box H without, opening or removing the door fl.

The inclined bottom 1T ol` the lire box provideel means ol' permitting the slug or other rlebl'irly to full by gruivity toward the owning 32. lv'hen the :ui-cumulution of Slag or other drbl'ie in dcpoeitl-.d or l'rurnod in the lire box und ilj is desired to remove the same therefrom the npnru'l or opi-rn1 the door 34 and removes tlnslag or other debril without disturbing or openingy the door 80 which carries the burner or in any nurnner interfering with the operution of the furnace.

It will be observed hnl thiv cleaning process can be performed during the. operation of the furnuws unil burning ol" the fuel in the fire box with eusse und convenient-e. lVhen, howevert it in desired to repair llw` fire borL or interior ol the furnrn'e flu. door covering the opeliiiflg ifi und the door roven ing the opening' ll run lunlz lu" Hurling; ou their hinges from the openingu ilu-roby per' milling( enen' und convenir-nt lia-w+ througlli the medium of the combined ollwningn to the interior ol the 'urnuwr teu' Ypui-powdesired.

To provide menne` 'for rlrunlng the roof lo of the furnace steam or uir pipes 37 and 3B :ire nested in elnunhere 8i) und t0 formed in the Side wells of the furnace. und they are provided with u-Series of 41 ull winged :it predetermined [mieteV which aline with openings conmiunienting with the chamber 10 of the furnace. The openings nre inclined upward toward the roof 36 of the fnrnuee es shown in Fig'. und when it in dreired to Glenn the roof of the furnace n. strfun or nir connection 'lll pipeey Btl und 3i' from enf; Source of Supelv, spraying the steam or forcing the nir enamel different Joints of the roofof the furnace., thereby cleaning saine of the dint.

The jets 41 are arranged and disposed in the side walls preferably in parallel but in o'eet relation to euch other. The cross horizontelflue 18 isbrought into communication with the ehameber l() by a series of openings 44 arranged at predetermined points across the entire Width of the furnace.

The mouth of the 'furnace 45 is closed by the usual conventional Sliding door 4G. Attention is celled to the fact that openin are provided throughout the furnace that inten sect with the lines at verious points for cleaning purposes so that the f'lues can be cleaned during the operation of the furnace at any time desired. The Hue. openings are closed by conventional hinged doorsl such as shown at, 47 and 48. The front wall of the furnace is provided with openings 49 which intersect with the flues and eomniunionte with the chamber 10.

mede with the?.

debris und vided with fines which couuunnicata wifz filles provided in the Sirlc mui front Walls, :1 roof for said walk, u fire box haring oponings communicuing with Swirl finos and :liso provided with a sloping bottom anni wur of the furimrv` :i .uhu-lr, Hush?, @minato-i io tbn stm'l-L und s1-msu horizontal liuc. au" means to Chmn thcroof of the furnumf.

16. Tn :L furnace. complifzing Walls form ing :1 chamber, the rear Willis of which uw arrangnul (o couvorgo 'from thu sirio Wallis of thc furnurc forming :i Substantially v uiaupml fire box and leaving an openiu between them, a bottom fitted to the fire ox to in Cline toward the bottom of the furnace and means to close the fire box opening.

17. In :L furnace comprising Willa form ing a chamber. the rear wail?, of which nre arranged to converge from the Iide wall@y Aof the furnace leaving an opening bctwocu them to form thc Side Walls of :i fir.A Y bottom ttcrl to the fire box to iuoim tw ward the bottom of the furnace, und Hnos provided in the Walls ol the furnace sind in connnunication with the fire box, atmosphorv, und chamber of the furnace.

'18. In a furnace comprising wail@ forining a Chambony the rvu; Walls; of which zero arranged to convex-go from tlm seul@ Walls; oi the furnace leaving fm opening butwccn thorn to form thu gifle vallo of u ire. bora, .f1

bottom ittc t0 tho Farc box bis wurd the bottom of the in Vidoci in tho will@ of ihr- 'Furnsiff communication with the: lire box. z phere. und chamber ot bc urruuc mui means to close the opening bi1-uvm uio Walls of the fire box.

19. Tn a furnace, compriuingj maiis fori ingr u chamber. the wur Wuils oil which um arranged to converge from tho suie Walls ol' the furnace leaving un opening' berm =r thorn to form :L fire box. u. boi'om ttcii to thel fire box to incline toward the bottom o? thcy furnace. finos provided in the walls of the furnace und in communication with the [iro box. utmospherc, and chin-uber of tho furnncm moans to close the. oponir'lgr oo u the Side Walls forming tho lira box, :incl moans independent of thc` cloing nimma of thu irc box to pcmiit crous to thu lin, hun to remove the Slug LlopoS-itwl tlm-cin from the products of combustion.

Q0. n u furnace. compriungj! milio 'forniing '.1 chamber, the Nur will@ u? winch urrungml to convorgu from fin' #illu f.' all, i" the, furnace lrfuing un owning in l. l them to forni :i lire box, u bottoni mirri to thc` fire box to incline toward thc bottom the furnace, H1105 provided in the. n'sliii oi5 thc. furnace and iu communication with the, fire, box` utmophcrm mul chamber of thc. furnaco. 11u-:1115` to slow tlm owning immensi the aide wclls forming thc fire bor.. mme independent of the closing mesnil of the r bw. hl pursuit www to the irlN n io zw mow thu slag iicpouitcd tlm-Pin from products of comhuton :nul ini-.uuu to alcun thc rool' of tho furnace.

:EL Tn :1 flzrnucr. conm-lining u' im? :l chamber. fine roar walk of 1- urruugcfl io con Wgr from ilu :wir wall@ ui' thc miz'icc unil il uomluuuif'zll'ifIn wird ihr Ero box. uitmouplwrr, und rlmmlwlof @bu furuurc. moans to rlosu the oprniug hrluwo tho oido Wallis forming the rr, box, ilu-:im indopcaulont of thc clou-ing ummm of thv. liu box to priinit :www: lo tlu` firr tc: rr mow Shag; lcpoiton'l thm'cir. lr-'usz ihr produ-JL of roa'ohuution. nuuih4 in cir-:ui ilus roof' of the. furnzicu. n stuck. :i rrosff. horizconlui limb y `l fiumi connecting ilu.l lim' mini llo 1mi Stuck.

Thu conlbilmiou in :l :m opru front iri- Lux lno'rhlwl vri-*lli i -loglni bottom. incarna of closing the olif-ning ull thu lim box. ihr utilis of liu. fiii'nuvu bring; wel

*iflrc'l will] nog whirl; fruuauunirulr with this lir box unil vhnzubvr of liu?` forma-v.

:.E'l. Thr combination in u liuumv nl nu opcu from lim box u'oviilml uill n whining lmltmn, :iu-uns of clouing llw pinning of tlu lire", bmi, flic walls of thv fus-maw lwisnf Erro- Yil'lzul with 'ims which rouummiwm will hr ,Fmbox final rhmnlarr olf lli@ fuiurv. u. iuuuoinful liuc urrungml Miur-cnf, m ill nu@ torn of rbc fm'nzscc. a. Sirach, uw! Hor-5 in volw nulnlraition xviii! (llo Staal; mul lmriomlil fim..

Qi, Thr c'oeubinfairm in n l'uruurr of un owsi front .Fire limi provid-.wl with :l cloning bottom, nil-om of closing ho ol'uufing of ilux box', iler wuii of ihr furla-nclwiug prrr volw? i s Front iii-c box' prorirlml r'r illumini. moans@ oli' clofalw L" f. wIlL-f of thv ift noli :i im' im; ns; of injecting pow.' i fooi me; :seid Eire han and. the ,prorwre o5.'

maine snumber, nii/'ane in roumain A from o? i :Gijon in he or i i rif @zo euch und f,

i f u ofonuhsetion into it no rear of ein? i ronduit the wsisiviie promu? xoisieo is he aimoophee from s; ai reoepif-o.

28, e :E fum Je. mi'ojui'ieing a rimmher o; Hijos? ing powdered hos; and Ehe pro-@Essaie of Coombs-:x means r. i@ we in commwnr'etion im fh!) si for m'-";iri"|n;r :a #nimo in 1 izhfsmner in.' nntiirni or fozweai mii lo smh and roh hiet he heavier profilicfs of -fomhuetoo into :i recuptinio prfrfniY et he rear of the chambery menne to r: minet ne voie le proab :wie of rmsion o the atmosphere rom sind weep wie, ,fin inname to clean he top of he forms: 1.

z: sa, ivrogne Comprising u chamber an a fm? hof;E menne of injerting powiered fooi ino soir? mi box und the profhu'e; of gooi ision imo the ohnmhor, ineens oomirising neg Whaefh .lare ifi stomenunifziion wi; the hore :and the from of ihe charm ber for creating e :irirffion in ihn chamber hv or ffm-eci flmf io soria ami coihiet h: er n More; of rmoimsio; into e ree-wre Se irefi :it ihn rena o? the cheminer-i, o rondom he vohxiih? profiof :'imetion io the atmosphere from said Per, paf'eq moons io denn fh@ iop of the furnace enf finos provided Eri iis-:f for nal-e und errno in romponoicute wih the box and fr i ih@ o* 'nehm'.

pvifogf fines whieh uro in communication 'Vil'. the [im ho): and the front of the :Hoher for creating n, em'tion in the rhainhoi' hy nnilual o1' foi'oud draft io suck c-oiriee'z't, the heavier products of coni- 70 osbe'f'ion imo a reveparie provided at the your of the cheminer, films opening into the ohzmiher, ire box mui atmosphere, and nieuwe to crwztea Suction in fhe rhamber ecogxmfe 76 Yin o, fornace, compl'iei iig' eide und. front forming a ehamgoesg in combination with rem converging 'alle Whioh are spaced rgert ain their frm ends to form u fire hoxf io aoinhinzition" with e Sopng and oonvvrg- 80 ing isotorn which is attached to the rear d ariofsure means which is adapted space between the ends of the srie weis or permit accese to the {i1-e box if desired.

35i. in e fumare@ comprising sid(` und front w,"!s in Combination with rear co A* verging wage which sure epced apart fheir free ends to provide en opening, s'ooing' bottoni @owed to seid roar Wails svisioh Wih the remwaiis provide n fire box, an aperhre piet Secured to the free ends of the rear Weils, and closure moans hinged to Said pinta to dos@ or open one of the og'iounge 95 34. In a, fuma-oe comprising: side and from@ Welle in wmbination with rear cohvei'ging Wells which are spaced apart "at their free ends to provide an opening, a sloping hotmm secured to Smid rezar Walls which with. the rear wals provide :i fire box ein apertued plete secured to the free ends of the rear weils, closure means hinged to szif pinto to close or open one of the openand e burner seeured to said cosure 35. In e furnace comprisin side andiy front weils in comhination Wti rear con weging welis which are spaoed apart at heir free ends to provide an opening, e slop- 110 ng bottom secured to Said rear wells which wiih the rear walls provide u fire box, an operim'ed plate secured to the free ends of i resuivaile: closure means hinged to said pmi-ie to dose or .pen one of the openings, e borner seemed to Said closure means, and i: second closure means hinged to said plate and ocaei `below the rst named closure mienne to permit` accees to the fire box withou aiectingwe first mentioned eiosure means. z

36, In e fmnaee, comprising a chamber :and a fire box, Hoes substantially surrounding the furnace having communication with ih@ enioephere, fire box und chamber in 126 simenon with e arose horizrmta flue .-h i@ in cromzmmimlion with the chamand atmosphere 11 n fummo, comprisin a chamber mici e fire bex? nes substantie ly surround 130 ing:y Qin furnace having communication with the atmosphere, fire box :rnd chamber, whrrl-by ini-uns are provided to inject e fore-.ml druflx into the filles and chamber in combination with u cross horizontal fine which is in communication with the chember :1nd atmosphere.

38. In :L furnace comprisin a chamber und u, re box, fines substantie ly uurroumiA ing the furnace hawing eommunicwtion with thc atmosphere, fire box and chamber, Ineens -LQ inject a forced draft into the fines and (-hmnber, und means to create :L suction vin the chamber to withdraw therefrom the unconsumod liroductsy of combustion, und depositV saune in :L receptacle.

39. In n furnace, a, fire box formed of convoi-ging wells which are spaced apart et ihcn' free ends incombnetlon with u bottom which is attached to the converging wells and u, closure means which is adapted to lose the speel: between the ends of the mide walls or permit access t0 the fire box if desired..

lIl. In n f urnnce, a. fire box formed of convorgirufy weils which :we spaced :Lpurn et their frro ends in combinsmon with :L bot- #om which etiturhecl 1o the vonwrging wallie, u phiw. huvingz an owning uhh-tmb iziuiiy o' u im winni io hc upm-c brulfi-n the frm ends of the wail, :uul n hingvd mouiuvd liu-uns zuhipfed to close Suid sparc pnriizliiy or completely.

41. l1; L flu-nueve u (irc bo):.` n riuliubtl in communirnfifm hcrowiih. iuvs in communication with the fire box, utmouphrrc :md rbumber, whrre'by n suction is (frozuvd in the chamber et. the rcnr' thcruobn aucuns 1u carry oli' hv'nncombus il|i -,]n'mllui of coaubustion to ihe utlnosphrrv, und mmm uuu--v able therewith in vlc-flu the roof of tho chzuuber.

12. ]n n furnmre. u fire box, :L chamber in communimfion Guire-with, iiuvs in communication with the fire box, :ltn'irisphrrc :and chunibvr. menne wbvrrby a. suction is Crcntrd in the chamber, mrans To carry of? the un eomnistibie produrlu of combustion ro the atmosphere, moans to bienal the roof of the chamber, und a pm'tiion Wall dividing the chambcr, :L bridg A wall intersecting there with und connected to tbe fire box.

In testimony whereof '.iix my Signature. 

